–We should do what we can _____ the endangered animals.` --Yes, it’s duty_____ them.
#50588
A
save, to protect
B
save, protect
C
to save, protect
D
to save, to protect
推荐题目
I want ___ a policeman because it is an exciting ____.
#51250
A
to be , job
B
doing , work
C
to do , job
D
be , work
Thank you for______ let me_______ on the trip today.
#49990
A
agree to；go
B
agreeing；going
C
agreeing to；go
D
agree；to go